Pneumatic pumping-machine.



G. E. HARKER.

PNEUMATIC PUMPING MACHINE.

APPLICATION FILED SEPT. '7, 1909.

Patented May 30, 1911 4 SHEETSSHEET 1.

Charles E; Marker G PNEUMATIC PUMPING MACHINE.

1E. HARKER APPLICATION FILED SEPT. 7, 1909.

4 SHEETS-SHEET 2.

C. E. HARKER.

PNEUMATIC PUMPING MACHINE.

APPLICATION FILED SEPT. 7, 1909.

Patented May 30,1911.

4 SHEETSSHEBT 3.

gl'mnntoz. Charles E. Hurker Chimney 4 O. E. HARKER.

PNEUMATIC PUMPING MAOHIIYB. APPLICATION FILED SEPT. 7, 1909.

993 9850 Patented May 30,1911.

4 SHEETSSHEET 4.

ENE

cHARLEs EDWARD HAIR-KER, or PARNASSUS, P N YL ANI ssIeno a'o ECTRICRENOVATOR MANUFACTURING co, or r rr'rsnune, rgEnnsYrv mA, A co ro- TION'OF PENNSYLVANIA.

PNEUMATIC PUMPING-MACHINE.

Specification of Letters Patent.

Patented Mayfid, 1911.

Application filed September 7, 1309. Serial 110.516545.

To all whom it may concern:

Be it known that I, CHARLES EDWARD HARKER, a citizen of the UnitedStates, re-

following is a specification.

objects to provide an apparatus of this character that will be light andsimple in construction, compact in the organization and; arrangement ofits parts, and highly efii cien't in operation.

The machine belongs to that type of pneui matic renovators wherein thecleaning is' effected by means of a suitable tool havinga suction mouthwhich is designed to be moved over the surface to be cleaned, said toolbeing attached to the free end of a conduit which has communication withthe renovating machine, the latter comprising essentially a suctioncreating device, a motor for driving the same and a dust collector intowhich the dust-laden air is delivered.

One of the prime objects of the present invention is to provide acomparatively small, light and compact machine of high citiciency ascompared to its size, especially adapted for household use and capableof being easily moved about from place to place as desired.

Another and. important object of the invention is to provide, in amachine of the character described, for converting the suction creatingmeans from a single to a multiple stage arrangement of fans, whereby toincrease the efliciency 0f the machine without in any way altering theconstruction or organization of the other parts of the apparatus.

Still another purpose of the invention is to provide means forconverting the machine from a suction apparatus to a blower, wherebydirt and dust accumulations may be dislodged from places inaccessiblewith a cleaning tool, provision also being made for conveying the aircurrents from the fan through the motor to cool the same when themachine is used as a suction apparatus.

The invention has in view other more orless important objects which willbe made apparent in the accompanying detailed description of the machinewhen taken inconnection with the accompanying drawings- In theaccompanying drawings which are illustrative of a preferred cmbodimentofthe invention, and of a modification, Figure l 1 is a vertical sectiontaken centrally through a complete machine. Fig. 2 is a horizontalsection taken on the line a.a of Fig. 1. Fig. 3 is a horizontal sectiontaken on the line bb of Fig. 1. Fig. 4 is a similar section taken on theline 0.c of Fig. 1. Fig. 5 is a perspective view, artially in verticalsection of a slightly di erent form of the invention.

Referring to the drawing, Fig. 1, the reference numeral 12, designatesthe supporting base of the machine, which in the instance shown is ametal casting in ring form having integral therewith a depending skirt13, provided at suitable equidistant points with outstanding aperturedlugs 14, constituting bearings for the rollers or casters 15. The skirt13 is provided with openings for a purpose presently to be explained.Arranged centrally within the said skirt and supported therefrom byspider-arm 16, is a bearing-block 17, carrying a vertical andnon-rotatable, open-ended oil-sleeve 18, having perforations 19, andperipheral spiral grooves 20, said sleeve being removably secured to thebearing block by means of a nut 21. Oil is introduced into the sleeve18, through a lateral opening 22, at its lower end, which opening isclosed by a screw-plug 23, tapped in an opening in the bearing block.

The reference letter M designates an electric motor which in theinstance shown is of the well known induction type, and has its shaft24, disposed vertically, the lower portion 25, of the shaft being boredout and fitting rotatively upon the vertical oil sleeve 18, and itsextreme lower end being supported upon bearing rings or washers 26,which surround the oil sleeve 18, and rest upon the bearing-block 17.The motorshaft has a vertical extension 27, upon which is mounted one ormore fan members, presently to be described.

Rest-ing upon the upper marginal edge of the supporting ring 12, is acasing member 29, preferably, but not necessarily made upwardly flaringand having at its lower. end

.an inwardly extending flange 30, through which and through acorresponding flange on the skirt 13, are passed'bolts 31, whereby thesaid casing member is firmly secured to the base-ring 12. At its upperend the casing member 29, is provided with an outstanding flange orprojection 32, and an annular seat 33, and between the upper and lowerends of said member 29, is a horizontal web or partition 34, providedwith a central opening through which the motor shaft passes, and with anannular series of openings 35, for a purpose presently to be explained.The partition 34 is provided with an annular seat 36, upon which rests arotatable damperring or cut-off. 37, provided with a series of openings38, corresponding in number and arrangement with the openings 35, in thepartition. The damper ring 37 may be rotated to a position to close theopenings in the partition, or to a position to bring the openingstherein in register with those in the partition and to accomplish this Iprovide the ring with an arm 39, which projects through a slot in thewall of the casing member 29. A spout 40 projects laterally from a wallof the casing member and has its inner open end terminating in the planeof the web or partition, whereby said end of the spout may be opened orclosed as desired by an imperforate portion of the damper ring. Theprojecting end of the spout is adapted to receive a flexible hose (notshown) to be used when the machine is operated as a blower to'dislodgedirt or dust accumulations from inaccessible places, and when so used itwill be understood that an opening in the damper ring will be broughttoregister with the inlet end of the spout, while the other openings inthe web or partit1on 34, will be closed. When, on the other hand, themachine is used as a pneumatic cleaner in the manner presently to bedescribed, the damper ring will be brought to a position where theopening in the spout 40 will be closed and the openings in the web orpartition open. In this position of the damper the exhaust from the fanor fans Wlll pass through the annular series of openings 35, in the webor partition 34, into direct contact with the electric motor M,

I and thus serve to keep the motor cool during the operation of themachine.

The casing member 29, is provided in its side. wit-h an inspectionopening closed by a removable closure plate 41, carrying two rotatableturn-buttons 42, each of which has a lateral portion 43, adapted to bebrought to a position where it will overlie a flange 44, on the interiorof the casing member around the said inspection opening. The closureplate 41 may be removed when .desired inorder to gain access to parts ofthe motor.

Located above and supported upon the marginal flange 32 of the casingmember 29, is the fan casing or fan casings, as the case may be,provision being made for employing one or more fans according to theefliciency or suction pull desired, two being shown in the presentinstance, although it will be understood that a greater or a lessernumber of units may be employed as desired. The lowermost unit of thefan casing consists of an annular ring 45 provided with a bottom 46,having a central opening 47, through which the motor shaft extensionpasses said opening being considerably larger than the shaft as shown.The bot- .tom portion 46, of the said unit is provided with an annularrib 48, that takes into the annular seat 33, formed in the casingmember, and the upper marginal edge of the unit is stepped, as at 49, asshown, to take into or receive the corresponding stepped lower portionof a superposed fan-casing unit 50. There may be employed as many units50, as desired, depending upon the suction efliciency required and theseunits may be added or taken away at will. Supported upon the upperstepped edge 51 of the unit 50 is a cover ring or annulus 52, having theenlarged central opening 53, concentric with the motor shaft, saidopening constituting the 1nlet tothe uppermost fan casing or first fanstage if more than one fan is employed. The cover ring 52 is providedwith a vertically extending marginal flange 54, and with a plurality ofupstanding lugs 55, to which latter is secured a plate or disk 56 thatis spaced above, but overlies the central 1nlet opening 53 to the fan.The several members or units of the fan casing or casings are clamped orheld together by means of bolts 57, passing through apertures in theflanged orlug portions 58 and 59 of the t ppler and lower members 52,and 45, respec- 1v e y.

Rotatably arranged within each fan casing is a fan consisting of a disk60, having a hub 61, through which the motor shaft passes and to whichthe hub is fixed as by means of a nut 62, on the threaded end of saidshaft. The disk 60 has attached to one face thereof a plurality ofcurved vanes 63,- arranged as shown in Fig. 2, and over said vanes isplaced a ring or annulus 64, the

cured in place by means of rivets 69. The employment of the pressureincreasing vanes is of course optional in this type of machine, but Iprefer to embody them in the construction as it has been found frompractice that they greatly increase the. efliciency of the machine dueto an increase in the suction pull of the fan.

Located above the fan is a dust collector consisting of an imperforatecylinder having a flange 71, at its lower end resting upon and bolted tothe flange 58, of the ring or annulus 52. Removably supported upon theupper end of the cylinder is a cover 72, having a dome 73, provided witha sight opening having a transparent window 74, through which the inrushof dust-laden air may be inspected, as desired. Projecting from one sideof the dome 73, is a spout 75, to which the end of a flexible hose maybe attached, the said hose carrying at its free end some form ofcleaning tool (not shown) having a suction mouth as is usual in machinesof this type. The cover 72, may be held in place in any preferred way,as by a plurality of spring clips 76, attached to the outside of thecylinder 72, and having their free ends engaging the marginal edge ofthe cover, as shown in Fig. 1.

Arranged within the cylinder 72 is a removable dust collecting bag orsack 7 7. secured at its upper end by means of a cord or wire 78, to aflanged ring 79, the vertical or depending portion of which is grooved,as at 80, to receive the cord or wire 78, and the horizontal portion ofwhich has a coating or covering of packing material 81, whereby a closeand air-tight joint may be made between the cover and cylindricalcasing.

Handles .82 are secured to opposite sides of the cylinder 72, to enablethe machine to be readily carried, one of said handles being shown indotted lines in Fig. 1.

hen the machine is to be used as a suction cleaner its operation is asfollows Let it be assumed that a flexible hose having a cleaning toolprovided with a suction mouth, is coupled to the spout projecting fromthe cover plate and the motor is started causing the fan or fans torotate. This will effect a suction pull through the said flexible pipe.As the cleaning tool on the end of this pipe is moved over the surfaceto be cleaned, the dust-laden air will be pulled or sucked in greatvolume through the pipe and pass on until it enters the dust collectingor filter ing sack or bag 77, where the air will be filtered leaving thedust and dirt in the said collector. The disk or plate 56, is employedto prevent the dust collecting bag 77, from interfering with or closingthe opening 53, leading to the fan, it being understood that the aircurrent enters beneath the disk or plate. The filtered air dischargingfrom the fan passes through the annular series of registering openings35 and 38 in the partition 34 and damper ring 37, respectively, intodirect contact with the motor, and thus tends to reduce the temperatureof the latter, it being understood that the motor has a tendency to heatup during operation. lVhen it is desired to remove the dust anddirtaccumulations from the sack' or bag 77, the cover 72 is taken offand'the bag lifted out of the cylindrical casing and emptied.

Then the machine is to be employed as a blower to dislodge dust and dirtaccumulations from inaccessible places, the flexible hose is removedfrom the spout 75, and at tached to the spout 40, and the damper ring isrotated so as to close the annular series of openings 35, and open thesingleopening leading to the spout 40. hen the parts are in thisposition it will be apparent that if the motor is started the aircurrent produced by the fan will-be forced through the spout 40, and thepipe or hose attached thereto, in a single stream, which stream may bedirected in any direction desired to remove dust and dirt accumulations.

In Fig. 5 I have illustrated a slightly modified form of the inventionwhich howeveroperates in the same manner as the form previouslydescribed. In said figure the reference numeral 85 designates a base orplatform mounted upon rollers 86. Secured to and rising upward from thebase is a hollow casing 87, within which the motor is housed, saidcasing being provided near its I upper end with a transverse web orpartition 88, having an annular series of perforations 89, and the sidesof the casing being also provided with an annular series of openings 90.An outlet spout 91, corresponding to the spout 40, Fig. 1, projects fromone side of the casing and a rotatable damper or cut-off ring 92, isprovided to alternately cut off the opening through the spout 91, andthe perforations 89, in the web or partition 88. The

said ring 92 has a vertical and horizontal portion formed integral, eachportion being provided with an annular series of perforations, designedand spaced to effect the operations described. As before stated, theoperation of the form of machine illustrated in' Fig. 5 is the same asthat illustrated in Fig. 1. Supported upon the hollow casing 87, is thefan casing 50, above which is the dust collector cylinder 70, having theremovable cover 72 provided with the transparent sight opening 74, andspout 75, all

as in the form of machine heretofore de- 4 scribed.

That I claim is,

1. A pneumatic renovator comprising a base, a horizontally disposedmotor supported by said base and having a vertically extending shaft, ahorizontally disposed fan on said shaft, a fan casing, an outlet spoutprojecting from said casing, means for directing the flow of air fromthe fan either through the said spout or against the motor, a containersupported upon the fan casing, and an inlet to said container adapted toreceive an air conduit.

2. A pneumatic renovator, comprising a base, a motor supported thereon,a fan on the motor shaft, a fan casing, an outlet spout projecting fromthe fan casing, a container in line with the fan casing, an inlet tosaid container adapted to receive an air conduit, and means for at willdirecting the fiow of air from the fan through either the said spout orthrough the motor.

3. A pneumatic renovator comprising a hollow base, an electric motorsupported therein and having a vertically extending shaft, a horizontalweb or partition above the motor having a plurality of openings, anoutlet spout having its entrance end in the plane of said web orpartition, a damper for at will controlling the flow of air through saidspout and openings, a fan on the motor shaft, a fan casing, a containerabove the fan casing, and an air inlet leading into said container.

4:. A pneumatic renovating machine comprising a chamber, a suctionconduit opening into said chamber, a fan for drawing air through thechamber from the suction conduit, a suction opening from the fan to thechamber, a pressure chamber into which said fan discharges, a pressureoutlet leading therefrom wherefrom air may be had for pressure cleaning,a motor for driving said fan, a casing for the same, and an opening fromthe motor casing to the pressure chamber whereby air may circulate fromsaid pressure chamber through said motor casing.

5. In a pneumatic renovating machine, a chamber, a suction conduitopening intosaid chamber, a fan for drawing air through the chamber fromthe suction conduit and for placing the air under pressure after passingthrough the chamber, a suction opening from the fan to the chamber, apressure chamber in which said fan discharges, and two dischargingopenings leading from said chamber, one of said openings leadingdirectly to the open air, and the other being a pressure opening, and apressure conduit leading from said opening wherefrom air under pressuremay be had for cleaning.

6. In combination, a base casing, a rotary motor in the bottom of saidcasing, the rotary element of which lies in and rotates in a horizontalplane and the shaft of which is vertically extended, a diaphragm in saidcasing above the motor, a pressure chamber above the diaphragmsurrounding said shaft, a fan casing attached to the top of said basecasing, fan blades within said fan casing driven by the motor shaft, anopening from the fan casing to said pressure chamber, an opening. fromthe pressure chamber to a pressure conduit, and an opening from thepressure chamber to the motor chamber in the bottom of said casing,

7. In combination, a base casing, a rotary motor in the bottom of saidcasing, the rotary element of which lies in and rotates in a horizontalplane and the shaft of which is vertically extended, a diaphragm in saidcasingabove the motor, a pressure chamber above the diaphragmsurrounding said shaft, a fan casing attached to the top of said basecasing, fan blades within said fan casing driven by the motor shaft, anopening from the fan casing to said pressure chamber, an

opening from the pressure chamber to a pressure conduit, an opening fromthe pressure chamber to the motor chamber in the bottom of said casing,and means controlling said last two openings to admit air to thepressure conduit or the motor chamber at will.

8. In combination, a base casing, an electric motor element in ahorizontal plane in the lowermost part of said casing, a shaft'associated with said element which extends centrally and vertically ofsaid casing and beyond its upper end, a diaphragm near the top of saidcasing through which said shaft passes, a plurality of openings in saiddiaphragm disposed on an arc of a circle concentric to said shaft, aclosure for the same also mounted concentric with respect to the shaft,a fan casing concentric with said shaft secured to the top of said basecasing, fan blades within said casing mounted on the motor shaft, a faninlet chamber concentric with the motor shaft mounted on the top of saidfan casing, a distributer plate beyond the end of said shaft, concentricopenings between the fan chamber and the pressure chamber and betweenthe inlet chamber and the fan chamber, and an inlet opening locatedconcentric of said shaft at the top of said inlet chamber.

9. In combination, a base casing, an electricmotor element in ahorizontal plane in the lowermost part of said casing, a shaftassociated with said element which extends centrally and vertically tosaid casing and beyond its upper end, a diaphragm near the top of saidcasing through which said shaft passes and which defines a pressurechamber at the top of said casing,'an opening in said diaphragm to themotor chamber, a fan casing concentric with said shaft secured to thetop of said base casing,-fan blades within said casing mounted on saidmotor shaft, a fan inlet chamber concentric with the motor shaft mountedon the top of said fan casing, a distributer plate beyond the end ofsaid shaft, an opening between the fan chamber'and pressure chamber andbetween the inlet chamber and the fan chamber, and an inlet openinglocated at the top of said inlet chamber.

ceases 10. In an air pump, a casing, a motor chamber, and an-air chamberwithin said casing, a fan which discharges air into said air chamber, apartition between the motor and air chambers, a pressure conduit leadingfrom said air chamber, and an opening from the air chambercommunicating'with said motor chamber.

'11. In an air pump, a casing, a motor chamber, an air chamber withinsaid casing, a fan which discharges air into said air chamber, apartition between the motor and air chambers, a plurality of openings insaid partition, and a conduit leading from one of said openings to theoutside of said casing, the remainder of said openings communicatingwith the motor chamber.

12. In an air pump, a casing, a motor chamber within said casing, arotary motor mounted therein, the rotary element of said motor beingmounted in the plane. trans versely of said casing, a motor associatedwith the rotary element of said motor, a partition across said casing ina plane substantially parallel to the plane of said rotary motorelement, and a plurality of openings in said partition on an arc of acircle concentric with said motor shaft and juxtaposed to said motor, aconduit communicating with one of said openings which leads to theoutside of said casing, an air chamber on the opposite side of saidcasing from said motor, and means for controlling the flow ofair throughsaid openings. 7

13; In an air pump, a casing, a motor chamber therein, a rotary motormounted therein, the rotary element of said motor being mounted in theplane transversely of said casing, a motor shaft associated with therotary element of said motor, a partition across said casing in a planesubstantially parallel to the plane of said rotary motor element, and aplurality of openings in said partition on an arc of a circle concentricwith said motor shaft and juxtaposed to said motor, a conduitcommunicating with one of said openings which leads to the outside ofsaid casing, an air chamber 011 the opposite side of said casing fromsaid motor, means for controlling the flow of air through said openings,said means comprising a disk concentric with the motor shafthaving holesregistering in certain positions with the openings in said partition,am. means for operating said disk from wlthout the casing 14. In an airpump, a casing, a motor chamber in said casing open to the atmosphere,an air pressure chamber adjacent said motor chamber, a partitiontherebetween, an opening from said air chamber to said motor chamber, aconduit leading from said air chamber without the casing, and means fordirecting air into said conduit at relatively high pressure or into saidmotor chamber at relatively low pressure at will.

In testimony whereof I have hereunto set my hand in presence of twosubscribing witnesses.

FRED W. BARRY, E. J. BAXTER.

